49th Parallel (1941)

Michael Powell directed this odd wartime propaganda film, set in Canada, before the American entry into WWII. A German U-boat has infiltrated the Canadian coastline, seeking to attack and subvert our neighbors to the North, before Uncle sam can wake up and get into the fight. The Canucks make short work of the Nazi, sub, sinking it in Hudson Bay, but a reconnaissance team, now stranded in Newfoundland, sets out to smuggle themselves into the US, where, sheltered by American neutrality, they intend on spreading Nazi propaganda, or perhaps even blowing up the American capitol, or some other act of terrorism.